When was the last time you paid using BTC? I assume you did so about 3 years ago.

There's this 2019 article that says it's been removed - Twitch Removes Support For Crypto Payments

Here's another one - Streaming Service Twitch Removes Crypto Payment Options, Reddit User Reports

edit: my bad.

I couldn't find anything either but have you checked the "See More Methods" option?

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I wouldn't be surprised if they've silently done ^[add/remove] it again.

They brought it back in June Amazon-Owned Twitch Quietly Brings Back Bitcoin Payments
^{- And this one from last year: Twitch Doubles Down on Crypto, Gives Subscribers 10% Discount}

Nevertheless, it was reinstalled a few months later within 2019:
See. https://www.coindesk.com/twitch-doubles-down-crypto-users-discount

As pointed out before, the "More Methods" seems to be the key, if bitcoin is still in play a payment method for subscriptions:

https://help.twitch.tv/s/article/how-to-subscribe?language=en_US

There is no further explanation apparently, as to the regional limitations geographical scope.

I was looking for an answer and so there you go. Paying BTC would be great but in these times where btc transaction fees are high then definitely before you send your payments you need to pay a lot or even making it double than the usual payment options due to bitcoin high transaction fees.

but most likely what you mean is not correct. No one has ever whispered to Twitch that Bitcoin is bad. Twitch even still accepts bitcoin payments and is currently providing a 10% discount for users who make payments with cryptocurrency. Some regions may not provide cryptocurrency payments and that is one of the policies and the OP doesn't get crypto payment options because the regions don't support it. Twitch is one of the streaming platforms that accepts bitcoin or cryptocurrency payments to date.

I personally think that paying such thing using cryptocurrency is much easier than any other payment method. I think Twitch should not do that. It will be better if it let people to have many payment method choice. I don't understand why twitch close their source of income from bitcoin, it is just decrease their profit, isn't it?. But if it just for a temporary I think its okay. I still using TRX to buy game items and it's make the developer of the game keep earn income, I can't imagine if there is no cryptocurrency payment option is available, I think I will not buy game item as much as now because of the difficulty and high fee.

No surprise there. It takes a lot of resources and funds to make a particular form of payment available. And if the volumes are not high enough, then the merchant may decide to remove support. And in the past many of the merchants (Stripe, Steam and Microsoft for example) have taken this step (not due to concerns about security or legality, but because of the low volumes). Now Tesla is an exception here. They removed Bitcoin as a payment option, because Elon Musk is mentally handicapped and couldn't come into terms with the fact that he can't manipulate BTC.

Based on the observation from this thread Twitch has been on and off with cryptocurrency payments so there is no surprise they even removed it for now, so if you have no other choice than cashing out in bitcoin then just wait until it adds up but it may take even years.

As someone suggested gift card option is much better since you can convert them into bitcoin if you wanted it to do.

in my opinion, the payment process has been updated and is different from the old way so that the payment menu using bitcoin does not exist, or it could be that Twitch has removed the bitcoin payment menu. I don't understand much about Twitch because I don't use it but I hope that payments on Twitch can use Bitcoin again so that there are more bitcoin users.

Looks like there's a lot of confusion around this. It is said that Twitch adds it back and then removes it (and adds it again in 2020). But now some users already reported that they no longer see Bitpay[1] on the payment option (previously used to process their crypto tx). So I guess it's now gone again?

[1] https://www.reddit.com/r/Twitch/comments/oiv7c8/where_is_bitpay/